I moved into a new build 5 months ago . I had the gas uncapped for the gas hob. But I (think) I was meant to get the boiler uncapped? Could that be the case? . As I (think) I have been running the hot water of the emersion heater. Is this an emersion heater? ( see pic)
Would be greatful for some advice as I really can't afford to call somone out. Unless I have no choice